Growth rate and morphology of in vitro cultivated Dendrobium bigibbum as affected by different photoperiod cycles
DOI:
https://doi.org/10.71336/jabs.1384Keywords:
Dendrobium bigibbum, In vitro, Morphology, MS Media, Photoperiod, PhysiologyAbstract
This study contributes valuable insights into the intricate relationship between photoperiod and the morphology of in vitro cultivated D. bigibbum. The study investigated the effects of different photoperiod durations (8, 12, 16, and 20 hours) on the morphology such as the growth rate (stem and root), leaf characteristic and stomatal conductance. Morphological assessments showed that the longer photoperiods promoted higher growth rates but adversely affected leaf traits at 20 hours, resulting in reduced leaf number, size, and area. While root growth rates remained unaffected by photoperiod, stomatal density increased with longer light exposure, accompanied by a slight decrease in stomatal aperture size, suggesting potential adaptations for water conservation.
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